Critique my oil choice

[WOJG]

I am still new here, and soaking up info, but I figured I would ask you guys what you think of my choice:

It is a 1987 Jeep Cherokee with the 4.0 L6 and 124,000 miles. It sees a lot of highway miles, lately 3000 or so a month at times, mixed with some 3-5 mile commutes where I try to always let the engine get up to operating temp, and some quick runs to the fire department where I volunteer where it gets run hard and no time to warm up or cool down.

I have had it since it had 86,000 and have always run M1 10-30 with a 8000-10000 OCI. It uses about a quart every 5000, a lot of that is due to a valve cover leak (its warped and I haven't gotten a new one yet).

What do you guys think?

[ October 04, 2004, 08:48 PM: Message edited by: WOJG ]

 

[Jelly]

If mine:

Before next oil change, run dose of Gumout Regane.

Next change - Mobil1 10w30 w/ Motorcraft FL-1A. 7,500 mile OCI.

All of above available at Wal-Mart...

[ October 04, 2004, 09:04 PM: Message edited by: Jelly ]

 

[Ugly3]

Mobil 1 10w30 is a great oil selection, I would pair it up with a Purolator Pure One filter and go another 200,000 miles.

Happy motoring!

 

[WOJG]

quote:

---

Originally posted by Ugly3:
Mobil 1 10w30 is a great oil selection, I would pair it up with a Purolator Pure One filter and go another 200,000 miles.

Happy motoring!

---

I left that out but thats exatcly what I usually run filter wise.

 

[Virtuoso]

If avaiable that engine would probably love GC. But why fix what isn't broke?

 

[Gene K]

Yes that oil is on the thin side of the 30 weight range for what those engines are claimed to like. I would be tempted to try Autozones 0w30 German Castrol (Almost a 40 Weight), Castrol Syntec 10W-40, Mobil 1 0W-40 European Formula or Mobil 1 Truck & SUV 5W-40.

On the otherhand if it aint broke....

Gene

 

[dropitby]

I would clean out the engine with a 5w30 like Chevron Supream and Auto RX. Follow the directions it should condition your seals for some time then If you stay with Mobil 1 add a qt of redline to beef it up. Or I agree with all the other oils including GC.

 

[HardbodyLoyalist]

I recently switched my nephew's 1991 Cherokee 4.0L over to Chevron Delo 15w40 with a Purolator Premium Plus filter. I initially had some trepidation:

http://theoildrop.server101.com/cgi/ultimatebb.cgi?ubb=get_topic;f=1;t=007930

...but I must say that it runs GREAT on the stuff.

These engines foul the oil pretty quickly. This is one of the advantages of the Delo. It has a robust additive package that helps keep all the garbage in suspension and prevents excessive wear. As an added bonus, it helps suppress the infamous 4.0L "piston slap." I consider it a terrific bargain at less than $2/qt.

In your climate, you can probably run 15w40 year 'round.

 

[Blue99]

A popular mixing option for Mobil 1 is to add 1 qt 15W-50 to the 4-4.5 qts of 10w30.

This bumps the viscosity of the mix up to 11.5 cSt which is basically just a heavy 30 wt oil.

Your consumption rate of 1 qt every 5k miles is already very good, however, this mix should be even better, especially in the Jeep engines that tend to like a heavier weight oil!

 

[KW]

My vote would be for M1 0W40 and 10K OCI's after you fix the valve cover leak.

 

[Motorbike]

Mobil 0w-40 for 12 months or ...... longer

The 0w-40 meets GM-LL-A-025

The following info is from Saab concerning oils that meet this spec can run up to two years if mileage is not exceeded ... it's a heck of an oil

INTERMEDIATE SERVICE is set by an algorithm that determines when service is required. Miles driven, crankshaft revolutions, number of starts/cold starts, ambient temperatures, speed and engine temperature are among the measurements used to compute the interval with the TIME FOR SERVICE message being set between 8,000 and a maximum of 15,000 miles. If the mileage interval is not met, the message will be set at 2 years.

NOTE: The actual oil condition is NOT measured, only the above calculations performed.

It is important to note that this computation is based on the use of fully-synthetic oil which meets GM-LL-A-025 specification. This is a specification that is currently not commonly found in the US. The only oils that are readily available that meet this specification are Mobil 0W40 SuperSyn and Saab 0W30 Turbo Long-Life Fully Synthetic oil.

[ October 05, 2004, 07:04 AM: Message edited by: Motorbike ]

 

[rshaw125]

I have been running Mobil 1 5W30 in my Explorer 4.0 with either a Motorcraft filter or Purolator.
7500 OCI. Add 1/2 quart at about 5,000 miles.
No complaints what so ever.
Also in NC.
The main advantage to the Mobil 1 for me is to lengthen the OCI.

 

[Dick in Falls Church]

WOJG-
Sounds to me like you are doing just fine.
At a qt of oil per 5000 miles, you really don't even have to be a big hurry to change the valve cover gasket.